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Rachel Zoe's son Skyler better watch his back: there's another stylish baby boy on the block!

Designer Rebecca Minkoff and hubby Gavin Bellour welcomed their son on Sunday. "I just pushed a 6 lb. 14 oz baby out," Minkoff tweeted. "OMG. I can't believe this is done!"

She also tweeted a photo of "the cutest family in the world," showing her actor hubby and "soon to be named baby Bellour" resting together. 

On Saturday, just one day prior to delivering her son, Minkoff tweeted: "OMG. I just wanna go into labor already!" 

Members of the fashion community congratulated the designer on her newborn. "Holy macaroni!" model Agyness Deyn tweeted. "Congrats!!!!! Love you. Big kiss for the little guy!" 

Chris Bletzer, publisher of, added: "Congratu-freakin-lations. The competition for the cutest family on earth is now officially over. Well done."